small stuff to make python-flake8 happier

re is unused, spaces/newlines
(ignoring line length)

daklib/command.py

@@ -21,7 +21,6 @@
 
 import apt_pkg
 import os
-import re
 import tempfile
 
 from daklib.config import Config
@@ -31,9 +30,11 @@ from daklib.regexes import re_field_package
 from daklib.textutils import fix_maintainer
 from daklib.utils import gpg_get_key_addresses, send_mail, TemplateSubst
 
+
 class CommandError(Exception):
     pass
 
+
 class CommandFile(object):
     def __init__(self, filename, data, log=None):
         if log is None:
@@ -135,7 +136,7 @@ class CommandFile(object):
         session = DBConn().session()
 
         keyrings = session.query(Keyring).filter_by(active=True).order_by(Keyring.priority)
-        keyring_files = [ k.keyring_name for k in keyrings ]
+        keyring_files = [k.keyring_name for k in keyrings]
 
         signed_file = SignedFile(self.data, keyring_files)
         if not signed_file.valid: